Sealing ring for containers



1953 R. s. EASTERDAY SEALING RING FOR CONTAINERS Filed March 31, 1949 IN VEN TOR.

Patented Jan. 13, 1953 UNITED STATES SEALING RING FOR CONTAINERS Russell S. Easterday, Cleveland Heights, Ohio, assignor to The F. C. Thornton Company, Cleveland, Ohio, a company of Ohio Application March 31, 1949, Serial No. 84,501

1 Claim.

This invention relates to clamping rings or seals for the removable heads of containers, and embodies an improvement in the sealing ring which is shown in Letters Patent of the United States No. 2,115,361, issued April 26, 1938 to Benjamin B. Daggett.

An object of the present invention is to improve the clamping ring shown in the aforesaid patent, so as to simplify the construction, to reduce the likelihood of breakage during the tightening or clamping operation, and to strengthen the construction adjacent the joint so as to permit the attainment of a more ffective clamping action.

Referring now to the drawings, Fig. 1 is a fragmentary front elevation of a ring embodying the present invention in clamped position; Fig. 2 is a bottom plan view of the portion of the ring shown in Fig. 1; Fig. 3 is a section taken on a plane indicated by the line 3-3 in Fig. 1; Figs. 4 and 5 are sections taken on planes indicated by the correspondingly numbered lines in Fig. 2, and Fig. 6 is a sectional view taken through a portion of the container with the head thereon held in place by the clamping ring.

In the drawings, the drum, which is usually of cylindrical formation, is indicated at I!) as having a rolled top edge II and a cover 12 which has a semi-curved edge l3 that is adapted to extend partially around the rolled edge II.

Th sealing ring I5 is semi-circular in section and is adapted to extend around the rolled edge of the drum and over a portion of the curved edge l3 of the cover, as is shown in Fig. 6. The sealing ring is split and has one end indicated at 20 and the other at 2|. The end portions 29 and 2| of the ring are raised and are adapted to receive a curved strip 22, which is securely fastened, as by welding, to the portion 2|, and is adapted to underlap the other portion 29. The curved strip thus provides a bridging piece across the joint and operates to absorb a part of the strain incident to the clamping of the ring about the drum.

Each end portion 29 and 2! also has additional raised portions 25 and 26, respectively, which form channel-shaped members (Fig. 3) through which tongues 27 and 28, respectively, are adapted to extend and to be fastened securely, as by welding thereto. The tongues terminate in eyes 29 and 30 respectively, which are in registration and are adapted to receive a bolt 3| by means of which the ends of the ring can be drawn together. Preferably the opening in the eye 29 is threaded to receive the bolt but, if desired, the opening may be smooth and a nut may be used instead.

In addition to the raised portions 25 and 26, the ends 20 and 2| have raised portions 33 and 34, respectively, which are moved into overlapping engagement during the clamping operation, as shown in Figs. 3 and 4, thus providing an eye through which a sealing wire 40 may be passed and twisted for receiving a seal. By virtue of the overlapping relationship of the portions 33 and 34, the end 2! may be drawn into abutting engagement with the other end at 32, to limit the extent to which the ends may be moved together.

An advantag of the present invention is the fact that the ring is greatly strengthened in the region where the maximum degree of strain occurs during the clamping operation. advantage is the fact that the overlapping ends simplify the construction and enable a sealing wire of minimum length to be used.

I claim:

In a container sealing ring having free end portions, each free end portion having an outwardly offset inner surface, a complementary arcuate bridging portion carried at on end within the outwardly offset inner surface of one free end portion, the other end of said bridging portion being adapted to extend in underlapping relation within the outwardly offset inner surface of the other free end portion of the ring when assembled on a container, the inner surface of the bridge portion coacting within the offset inner surfaces of the ring free end portions to form a smooth continuous arcuate surface with the intermediate ring portion, the extremity of each free end portion of the ring having an outwardly oifset portion forming a transverse ring connecting shoulder portion spaced inwardly from the corresponding extremity, one of said extremities being offset outwardly further than the other, whereby the outwardly offset extremities of each free end portion may overlap with the edge of the inner extremity abutting a ainst the shoulder portion of the outer extremity in assembled relation on a container, each shoulder portion having an aligned opening forming a peripheral passage underneath the overlapping extremities and adapted to receive a sealing member therethrough, and means carried by the free end portions of the ring for drawing said portions arcuately toward each other into assembled relation about a container.

RUSSELL S. EASTERDAY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 18,514 Minor Oct. 27, 1857 1,263,232 Grinden Apr. 16, 1918 2,115,361 Daggett Apr. 26, 1938 2,368,929 King Feb. 6, 1945 FOREIGN PATENTS Number Country Date 523,875 Great Britain July 24, 1940 A further 

